SARA / Free Tools / CVE / CVE-2026-20079

CVE-2026-20079 — A vulnerability in the web interface of Cisco Secure Firewall Management Center

A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system.&nbs

CVSS
10.0 CRITICAL
EPSS
74.70% (top 0.50%)
CWE
Published
2026-03-04T18:16:24.230
Last modified
2026-09-10T12:48:17.580
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA KEV — Actively Exploited
Added to KEV
2026-09-09
BOD 22-01 due
Ransomware use
Unknown

01What is this vulnerability?

A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system. 

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2026-09-09. Ransomware use: Unknown.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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